Table 4.
Potential applications of metabolomics for the diagnosis and management of mycobacterial infections
Metabolites | Sample | Method (Ref. No.) | |
---|---|---|---|
Early diagnosis | d-Alanine–d-alanine ligase | Mycobacterial culture | NMR (63) |
Mycocerosic acid methyl esters | Sputum | GC/MS (43) | |
Latent vs. active TB | 3D,7D,11D-Phytanic acid, behenic acid, and threoninyl-γ-glutamate | Serum | UPLC-MS (49) |
Trehalose-6-mycolate, phosphatidylinositol, and the D-series resolvins | Plasma | LC-MS/MS (47) | |
Distinguishing pathogens from nonpathogenic mycobacteria | Triacylglycerol, acylated trehaloses, mycocerosic acid | Bacterial culture | 2D HSQC NMR (39) |
Phthiocerol dimycocerosate and sulfolipid-1 | Bacterial culture | FT-ICR-MS (38) | |
Treatment response | p-Aminobenzoic acid, pyridoxal/isopyridoxal, formimino-l-glutamic acid, l-α-aspartyl-l-hydroxyproline, N1,N12-diethylspermine | Urine | LC-MS (59) |
Definition of abbreviations: 2D HSQC = two-dimensional heteronuclear single-quantum coherence; FT-ICR-MS = Fourier transform ion cyclotron resonance mass spectrometry; GC/MS = gas chromatography-mass spectrometry; LC-MS/MS = liquid chromatography-tandem mass spectroscopy; NMR = nuclear magnetic resonance; TB = tuberculosis; UPLC-MS = ultrahigh-pressure liquid chromatography-mass spectrometry.